双边钢箱钢-混组合梁静力三分力系数分析  

Analysis of Static Three-component Coefficient of Steel-concrete Composite Beam with Double-sided Steel Box

作　　者：陈星灿 陈建兵[1] 王东伟 刘晨光 CHEN Xingcan;CHEN Jianbing;WANG Dongwei;LIU Chenguang(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China;No.2 Engineering Ltd of FHEC,CCCC,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,苏州215011 [2]中交一公局第二工程有限公司,苏州215011

出　　处：《交通科技》2023年第4期32-36,共5页Transportation Science & Technology

基　　金：国家自然科学基金项目(52208189)资助。

摘　　要：抗风性能是桥梁设计中的要点,主梁断面静力三分力系数分析是斜拉桥抗风研究的基础,但未见双边钢箱钢-混组合梁断面的相关研究。文中基于计算流体动力学(CFD)技术,对某黄河特大桥主梁断面静力三分力系数开展研究,分析CFD模拟时不同网格精度对静力三分力系数的影响。结果表明,采用CFD技术可有效识别斜拉桥的主梁静力三分力系数;仅改变网格精度,三分力系数变化不明显,阻力系数呈现变小态势,升力系数和扭矩系数呈现变大态势,但计算效率大幅降低。Wind resistance performance is a key point in bridge design.The analysis of the static three-component force coefficient of the main beam section of cable-stayed bridges is the foundation of their wind resistance research.However,there is no relevant research on the cross-section of double-sided steel box steel concrete composite beams.Based on computational fluid dynamics(CFD)technology,the static three component force coefficients of the main beam section of a certain Yellow River super large bridge are studied,and the effects of different grid accuracy on the static three component force coefficients are compared during CFD simulation.The results indicate that using CFD technology can effectively identify the static three component force coefficients of the main beam of cable-stayed bridges;Only the grid accuracy is changed,the variation of the three component coefficient is not obvious,the resistance coefficient is reduced,and the lift coefficient and torque coefficient are increased,but the calculation efficiency is greatly reduced.

关 键 词：桥梁工程 大跨度斜拉桥 数值模拟 静力三分力系数 CFD 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U441[交通运输工程—道路与铁道工程]